Adjustable spark-gap.



' Adjustable 'Spark-Gaps' .PTENT FFCEne ALBERT lil. OF PETERSBURG, VIRGINIA.

nniuemisnueeennwenp.

pei'ifieu'nn of Letters Peten/f..

lenient-Qd Feb. 5, :wie

.lipple-filon tiled .Tune E, 1916. Sera?. Ho. 102.554.

To fili @ci/'iam t muy concer-1i.:

Ee it known that, Al' Ammer E. Rubia, u citizen of the Unit-ed Litutes oit .finie wi, re ing at; Peteie'uuifip'7 in the county oi Din.- widrlie und State of Virginia, l1 Je invente-il certe-iu new sind useful luunruveineuts in ot' which the. iollo ,iing .u Specification., reune being hrul the ein to the accompanying; diuwiui'.

rfhie invention i'elutee to uu :uli uhh'. .epe-rh gap im. spark plugs Ywhich is con stiuoted so us to euuee the dei-'ice to in tute the even running of un engine es l fas' peniitt-ing-ooin'limiutivelv dirty Spoil-1 plugs to operate and to keep ,new

' spark plugs olefin. f

'Anothei' object of this in'efei'ilzion the prodliotion of adjustable spfiili which is mounted 'upon the outerlenti of e s 2U plug so that the Spe'i'l'plate being c i'ipe-n the insulating strip muy be held in un adjusted position with. respect to the upper end of the spar-lt plug u which the. nutis eui'iied., theehy providing euiiioieut space foi' the pusstge'of un eleetifio ouifi'eut ther'- betwe'en for producing),` u apatia', the devioe being adjustable .so that. it muy be used in connection with. currents of different volt.`A

With these and other obje-ete in View this invention consiste oi Certain novei combine tions, constructions, und :arrangements of parts as will be hereinafter fully described l 'hu-ia the open.

Aconi-se. it is obvious that the undl claimed. p

In the accompanying drawing.'- l'igfure 1 is :i e'de'elevution of the adjuntablespurk irzio ehmviifigv fthe seme niou1ite il upon e spa l'i-r plug` Fig. 2 ie top plan View of the dei/ice. .Fig- 1s :L longitu-iiliuul section tinoueu the-uiljustuhle spurl; gap? showing the niue mounted upon u spurl: plug also shown 1n seotion. I

Fig. Li 'is e detail peuiyieetive view the insulating* strip. V

F1 g. 5 le e. ldetuii pespeetm-e View tie plu-te. l

Reitforum? to the nccouiuauv'uuf throwing n1 l u n 3 4 I.' by numerals it, will be seen that. the ederip l 'which is elongated althoughI sume i be neuh-ming st rip ed utljeceut one formed adjacent of' any desired gs Q if# end thereof and n slot.

ite opposite end. The ple-te Li .hesopenings 5 formed therein, which openings (were,

adapted to register with the' openings 2 formed in the iusuliiting lstrip, since this pleite ei adapted to be carried upon this .et-rip l.

The bolt 6 having he puse-ed through u plurulity of these oponinge', us hown clearly in Fig. 3, for 'us-slet` iup` in. yet-(lining the pluto in elixed position upon the insulating eti'ip. The binding post 8 puees through the remaining openings 2 und 5,' und hos e nut thereon, shown ut 9, iur holding the sume in e fixed position7 'whereby the bolt/G und the biridingl'post. 8 will 'ioeiively liold thiepluto upoi'the iriuuhting trip l. The wiie 10 n'uiy he held in eniaigemeut with the binding post 8 by ineens ot' the'bindiug 4nut 'lit' when the deviee is in ope1ution i l Theeparlt plugv as indicated at l2 unify be. of any desired eonstrue'tionund has the Spui-kino pole i3 extending therethrough which liso hueu .nu'li1 4'L ufijuentits upper enti.A This upper th raided lend' 1.5 o'lf'the pole 13 posees throughthe Slot of the insulating Strip l und curr-ies" the binding nut l5.

inthe spui'l plugs ordinarily used it is- .ivell known that; the plugs very frequently become dirty due to Various eusons, which frequently causes short circuits und prevents the smooth und even :tunning of the engine owing; to the irregular sparkinfr. This device, hou-'everj isto be attached in the usual manner to the cylinder of the engine and the Wire l0 applied as above set forth. The I uni'ent. will pass through' the binding post oven: the plate 4i to the upwardly 'extending ne i 'L7 and the-1i to the depending lip 18 i: upon the plete. 11': will be remembered that as .long as the plate 4 is held in u lined position by means of the bolt 6 und the binding post 8 upon the insulating strip will be held so as to move whenever the insulating strip lis moved. If it is desired io move the lip 18 to e point very close to iio binding nut, 1G it will be seen that. the binding nut muy be moved upon the thread upper end l5 ofthe pole 13, tl1usullowing; the insulating strip 1- to be moved for u .short distance owing to the extension of the threaded upper end of the pole 13 'through the' slot', 3 of the insulating strip i.. When the strip has been zoved so as te cause the lip- 18 to be moved to a. position desired, the nut l may be egeintighteuegl u nut lis adapted tov uponthe strip forV holding the strip in un adjusted eet position. Thus, it will be Seen. thut if u low voltage current is used the current muy eneily juni the spuce, euusing u spurl( between the lip 18 und the uut 1G. lt is, olf course, obvious thut tincurrent will pass down through the pole 13 for cuue ing u spurl( within the cylinder :1nd us the spark plug,` is mounted upon the cylinder u coni-plete cirtuitv is formed. It u comparutively high volt-nge current is need the nul. 16 muy be loosened so ne to permit the insuln'ting strip l to Vbe moved us fur us poe-sible in one direction 5o ne to move the .lip 1S ot' the plate l ns fur un poesihle from the uut lo. (lt course, it is intended that in euch un :tation the current' will be of Sudieient strength to iunip the epilee between thi` lip und the nut so us to muse n proper epurhing eii'euit. t.

'From thei'oregoini:r description it Will be Seen that n 'very Simple and eilicriex'it adjustebie spark gzip hue been provided which; is constructed eo ne to be easily carried upon the upper end of en ordinary spark plug for inducing un electric current to pees through the spurl( plug evenly et predetermined intervals for cruising the proper sparking within the cylinder, whereby the engine may be caused to run rapidly und easily, while the operution of this device will cause the ping to remain clean. Furthermore, it will be eeen thut simply by the adjustment ofr the` not. 16 and the insoluting strip l the utjusluhle spark gup nii-.y be moved to n posiiion desired und retorted in this,I udjusted set position so thut current ol' dili'erent: roltuge muy he pnesed over the device l'or propely spurliing und at the suine time facilitating the operation of the eng-ine.

l'n u (lei-'lee of the clues described, the coinhiiuition o u plete with un insulating mili. Suid pluto adopted to reet upon seid ineuluting wip, .u holt pessimo; through seid pluie for useistinje in retaining the suine upon sind strip, u binding post paSSing thin-ugh euidstrip und pluto, u wire. retain- .ing nur-ins eau-rieti by uuid binding post" whereby nn electric current muy he supplie to Seid plete, :zuid plate formed from u single sheet ot' metal und bent so us to prori'de un upwardly extending n eelr, Suid neck terminating in a depending tapering iip,

seid strip provided with nn elongated elet so that the upper end of a spark ping muy be passed therethrough, eo as tu permit the strip vto benioved to .fin adjusted position, thereby permitting currents of diierent voltage to be used with the device for censing sparking :it the outer end olI- the plug. l

Inftestimony whereof I hereunto eiiix my signature.

ALBERT n. READE. 

